Give two examples of long-day plants that flower during summer.

Answer

To answer the question about two examples of long-day plants that flower during summer, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Photoperiodism**:
- Photoperiodism is the physiological reaction of organisms to the length of day or night. It influences flowering in plants based on the duration of light they receive.

2. **Identify Long-Day Plants**:
- Long-day plants are those that require longer daylight hours to initiate flowering. They typically flower when the day length exceeds a certain threshold.

3. **Determine the Flowering Season**:
- Long-day plants usually flower in spring or summer when the days are longer.

4. **List Examples**:
- From the knowledge of long-day plants, we can identify specific examples that flower during summer. Two common examples are:
- **Lettuce (Lactuca sativa)**: This plant is known to flower when the days are longer.
- **California Poppy (Eschscholzia californica)**: Another example that blooms during the summer months when the day length is extended.

### Final Answer:
Two examples of long-day plants that flower during summer are:
1. Lettuce (Lactuca sativa)
2. California Poppy (Eschscholzia californica)

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